How to use object collection with linked objects

<p>Hi,</p><p>I'm using VS2005 Crystal reports in a c# client app (server has database, but client does not have!). So the use of the objects transfered to the client seemed to me a good solution for showing reports on the client. The objects mostly link to several other objects (properties of type <type> or properties of type [] <type>) and the links are correctly configured in database assistant.</p><p>But: Whenever using one of the linked fields, all of the main fields will never show up in the report.</p><p>So, what is the correct way of showing a master / detail report using linked object collections???</p><p> (A small test sample app can be provided upon request)</p><p> TIA</p><p>BP</p>

What database and connection type are you using? Are you connecting the report directly to the database, or trying to assign the datasource to object data?
It sounds like you might be trying to use a linked list, collection or other C# construct to pass your data in. This currently isn't supported by the Crystal Reports SDK. You can use a DataSet or a DataTable, and possibly also an IDataReader depending on which version of Crystal Reports you're referencing in your project. Of course you can also connect directly to the database, even if the database isn't on the same machine as the application.
The way to show master records with detail information is through the use of subreports and linked subreport parameters. Linked subreports take their parameter value from a record in the main report, so that only the data appropriate to that master record is displayed. The guys over in the [report design|SAP Crystal Reports; forum can help you out with this if you have questions on the specifics.

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